The patch below does not apply to the 6.5-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.5.y git checkout FETCH_HEAD git cherry-pick -x acab8ff29a2a226409cfe04e6d2e0896928c1b3a # <resolve conflicts, build, test, etc.> git commit -s git send-email --to 'stable@vger.kernel.org' --in-reply-to '2023102005-stomp-defy-0f8e@gregkh' --subject-prefix 'PATCH 6.5.y' HEAD^..

Possible dependencies:

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From acab8ff29a2a226409cfe04e6d2e0896928c1b3a Mon Sep 17 00:00:00 2001 From: Iulia Tanasescu iulia.tanasescu@nxp.com Date: Thu, 28 Sep 2023 10:52:57 +0300 Subject: [PATCH] Bluetooth: ISO: Fix invalid context error

This moves the hci_le_terminate_big_sync call from rx_work to cmd_sync_work, to avoid calling sleeping function from an invalid context.

Reported-by: syzbot+c715e1bd8dfbcb1ab176@syzkaller.appspotmail.com Fixes: a0bfde167b50 ("Bluetooth: ISO: Add support for connecting multiple BISes") Signed-off-by: Iulia Tanasescu iulia.tanasescu@nxp.com Signed-off-by: Luiz Augusto von Dentz luiz.von.dentz@intel.com

diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c index 31d02b54eea1..e6cfc65abcb8 100644 --- a/net/bluetooth/hci_event.c +++ b/net/bluetooth/hci_event.c @@ -7021,6 +7021,14 @@ static void hci_le_cis_req_evt(struct hci_dev *hdev, void *data, hci_dev_unlock(hdev); }

+static int hci_iso_term_big_sync(struct hci_dev *hdev, void *data) +{ + u8 handle = PTR_UINT(data); + + return hci_le_terminate_big_sync(hdev, handle, + HCI_ERROR_LOCAL_HOST_TERM); +} + static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data, struct sk_buff *skb) { @@ -7065,16 +7073,17 @@ static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data, rcu_read_lock(); }

+ rcu_read_unlock(); + if (!ev->status && !i) /* If no BISes have been connected for the BIG, * terminate. This is in case all bound connections * have been closed before the BIG creation * has completed. */ - hci_le_terminate_big_sync(hdev, ev->handle, - HCI_ERROR_LOCAL_HOST_TERM); + hci_cmd_sync_queue(hdev, hci_iso_term_big_sync, + UINT_PTR(ev->handle), NULL);

- rcu_read_unlock(); hci_dev_unlock(hdev); }